<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <meta name="author" content="甘忠祥">
    <title></title>
    <style>
        *{
            box-sizing: border-box;
        }
        ul{
            padding: 0; margin: 0;
            list-style: none;
        }
        .box{
            width: 520px;
            height: 280px;
            margin: 100px auto;
            position: relative;
        }
        .img-list li{
            position: absolute;  
            top: 0;
            left: 0;
            display: none;
        }
        .img-list li.current{
            display: block;
        }
        .indicator{
            width: 100%;
            position: absolute;
            left: 0;
            bottom: 20px;
            display: flex;
            justify-content: center;
            color: white;
        }
        .indicator li{
            width: 20px;
            height: 20px;
            background-color: gray;
            text-align: center;
            line-height: 20px;
            margin: 0 5px;
            border-radius: 50%;
        }
        .indicator li.active{
            background-color: red;

        }
        .img-click span{
            width: 30px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            color: white;
            background-color: rgba(0, 0, 0, 0.1);
            position: absolute;
            top: calc(50% - 20px);
        }
        .img-click span:hover{
            background-color: darkgray;
            cursor: pointer;
        }
        .img-click .prev{
            left: 0;
        }
        .img-click .next{
            right: 0;
        }
    </style>
</head>

<body>
    <div class="box">
        <ul class="img-list">
            <li class="current"><a href="#"><img src="img/01.jpg" alt=""></a></li>
            <li><a href="#"><img src="img/02.jpg" alt=""></a></li>
            <li><a href="#"><img src="img/03.jpg" alt=""></a></li>
            <li><a href="#"><img src="img/04.jpg" alt=""></a></li>
            <li><a href="#"><img src="img/05.jpg" alt=""></a></li>
        </ul>
        <ul class="indicator">
            <li class="active">1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
        </ul>
        <div class="img-click">
            <span class="prev">&lsaquo;</span>
            <span class="next">&rsaquo;</span>
        </div>
    </div>

</body>
<script src="./jquery.min.js"></script>
<script>
    var index = 0;
    function show() {
        $('.img-list li').eq(index).addClass('current').siblings().removeClass('current');
        $('.indicator li').eq(index).addClass('active').siblings().removeClass('active');
    }
    var timer = setInterval(next, 1000);
    $('.indicator li').mouseover(function () {
        console.log($(this));
        index = $(this).index()
        show();
    });
    $('.box').mouseover(function () {
        clearInterval(timer);
        timer = null;
    });
    $('.box').mouseout(function () {
        timer = setInterval(next, 1000);
    });

    //下一张
   function next(){
        index = index == $('.img-list li').length -1 ? 0 : index + 1;
        show();
    };
    // 上一张
   function prev(){
        index = index == 0 ? $('.img-list li').length -1 : index - 1;
        show();
    };

    // 点击下一张
    $('.next').click(function(){
        next();
    })
    $('.prev').click(function(){
        prev();
    })

</script>
</html>


